Why are pork scratchings good for keto diets? Proper pork scratchings contain little to no carbohydrates, which make them a great ketogenic diet snack. Snaffling Pig's Pork Scratchings, Pork Crackling and Porky Puffs are just three of your keto-friendly mates you might not have known you had! How often can I eat pork scratchings on keto? Pork scratchings can be super-filling because of how much protein and fat they have in them. On the other hand, eating too much protein on a low-carb diet could take you out of keto. We're not your nutritionist or doctor, so we can't tell you how often will work best for you, still, in moderation works well for us!